How to Read Latitude and Longitude on a Map
On this map, horizontal lines are latitude and vertical lines are longitude. Latitude lines (parallels) run east–west and are numbered from 0° at the equator to 90° at the poles. Longitude lines (meridians) run north–south and are numbered from 0° at the prime meridian to 180° east and west. To read a location, find the latitude line it sits on, then the longitude line — and write latitude first.